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why does my Ford Explorer's check engine light keep coming back - Ford Explorer
Home/Cars/Ford/Explorer/Fifth Generation (2011-2019)/why does my Ford Explorer's check engine light keep coming back

why does my Ford Explorer's check engine light keep coming back

Ford Explorer Fifth Generation (2011-2019)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
506 words

Problem Statement

Learn how to diagnose and fix the recurring check engine light issue in your Ford Explorer. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component
Engine
Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before working on electrical systems.
  • •Allow the engine to cool completely before performing any service on the engine or exhaust system.

Symptoms

  • •Check engine light illuminated
  • •Potential loss of power during acceleration
  • •Engine misfires or rough idling
  • •Decreased fuel economy
  • •Unusual exhaust smoke or odor
  • •Engine stalling during operation

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •OBD-II scanner
  • •Socket set
  • •Multimeter
  • •Basic hand tools

Parts Required

  • •Spark plugs
  • •Ignition coils
  • •Fuel injectors
  • •Vacuum hoses

Additional Information

Affected Component
Engine
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
4 items
Parts Required
4 items

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Solution
1. Preparation
  • Tools Required: OBD-II scanner, socket set, multimeter, basic hand tools.
  • Clear the engine codes from the OBD-II scanner after diagnosis.
  • Gather all necessary parts and tools before starting the repair.
2. Replace Faulty Components
  • Ignition System:

    • Remove the ignition coil(s) and spark plugs using a socket set.
    • Inspect for wear; replace them if they are worn or damaged.
    • Torque spark plugs to manufacturer specifications (typically around 15-20 ft-lbs).
  • Fuel System:

    • If fuel injectors are faulty, disconnect the fuel lines and electrical connectors.
    • Remove the fuel injectors from the fuel rail and replace them with new units.
    • Reconnect fuel lines securely and check for leaks.
3. Check and Repair Vacuum Leaks
  • Visually inspect vacuum hoses for cracks or disconnections.
  • Use a smoke machine or carburetor cleaner to identify leaks.
  • Replace or repair any damaged hoses found during inspection.
4. Test and Replace the Mass Air Flow (MAF) Sensor
  • Disconnect the MAF sensor connector and remove the sensor from the air intake.
  • Clean the MAF sensor with MAF cleaner; if the problem persists, replace the unit.
  • Reinstall the MAF sensor and reconnect the electrical connector.